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Posted: 6/5/2009 3:06:03 PM EST
I currently have my 10.5" & my 12.5" zeroed at 50 yds. I mean, they are for CQB.

Big question: (sorry I'm new to this). If I have my Aimpoint zeroed at 50 yds. When I go to shoot a pop can or what have you, at a closer distance (like 25 yds.) do I am higher or lower than the object?
Link Posted: 6/5/2009 3:09:06 PM EST
I zero my SBR at 50 yards also and my 16 inch with aimpoint at 50 yards. At 25 yards and closer aim a few inches high.
Link Posted: 6/6/2009 12:21:21 PM EST
50 yards here as well. This translates to 1.2" low at 25 yards, so you'll have to aim high to compensate.
Link Posted: 6/6/2009 3:59:52 PM EST
[Last Edit: 6/6/2009 4:47:51 PM EST by Shizzlemah]
75 yards here with my SBR (9mm). It's dead on at 25 with the bullet rising, and dead on at 75 as the bullet is falling again.

It would hit low under 25 yards,
no more than 1.5" high between 25 and 75 yards,
then hit low after 75 yards, about 4" low at 100yards.... And it drops like a stone after that.

But keep in mind that is MY data for 9mm and wont be accurate with your 223 :)


Try entering your load data into the calculator here and getting the trajectory tables. It will tell you how high/low the round will strike.
Trajectory Calculator
Link Posted: 6/6/2009 4:38:13 PM EST
50yds.
Link Posted: 6/6/2009 5:07:34 PM EST

Originally Posted By JIM762:
I currently have my 10.5" & my 12.5" zeroed at 50 yds. I mean, they are for CQB.

Big question: (sorry I'm new to this). If I have my Aimpoint zeroed at 50 yds. When I go to shoot a pop can or what have you, at a closer distance (like 25 yds.) do I am higher or lower than the object?

Everything is BattleSight Zero'd. That means 44-46 yards in most cases.
Link Posted: 6/7/2009 3:44:09 PM EST
50 yards.
Link Posted: 6/9/2009 6:26:35 AM EST
Originally Posted By shadowcop:
50 yards.


this
Link Posted: 6/10/2009 2:37:11 PM EST
7 to10 yards, because that is the distance in which most self defense weapons are used.
Link Posted: 6/11/2009 3:07:06 PM EST
One inch below point of aim at 75 feet.
Link Posted: 6/11/2009 4:14:02 PM EST
Originally Posted By brothermike:
7 to10 yards, because that is the distance in which most self defense weapons are used.


How do you account for the 2.5 inch difference from Point of Aim to the bore at such a close difference? And if you are sighting it in at such a short distance, do you have any idea where it shoots at anything that is beyond 10 yards? Hope so, because you are going to have quite the rainbow effect to memorize.

I sight mine in for 50 yards, Santose IBZ. I shoot point of aim for anything from 15 yards to 200 yards. Anything closer than 15 yards I aim 1-2.5 inches high depending how close the target is.
Link Posted: 6/12/2009 12:33:44 PM EST
Originally Posted By chwi548:
Originally Posted By brothermike:
7 to10 yards, because that is the distance in which most self defense weapons are used.


How do you account for the 2.5 inch difference from Point of Aim to the bore at such a close difference? And if you are sighting it in at such a short distance, do you have any idea where it shoots at anything that is beyond 10 yards? Hope so, because you are going to have quite the rainbow effect to memorize.

I sight mine in for 50 yards, Santose IBZ. I shoot point of aim for anything from 15 yards to 200 yards. Anything closer than 15 yards I aim 1-2.5 inches high depending how close the target is.


I shoot a DR.Optic red dot mounted on top of the A2 carry handle so the height difference does not matter. The iron sights are zeroed at 50 yards but since I have a 10.5'' barrel the maximum effective range of the 5.56 round is less than 40 yards and it is after all a home defense weapon so I train at distances less than 20 yards. YMMV
Link Posted: 6/13/2009 5:31:11 AM EST
I have mine zerod at 200 yards. Between 0 and 225 it is never more than 2 inches above or below point of aim except right at the muzzle.
Link Posted: 6/14/2009 8:31:51 AM EST
[Last Edit: 6/14/2009 8:33:26 AM EST by L4zy]
Originally Posted By brothermike:

I shoot a DR.Optic red dot mounted on top of the A2 carry handle so the height difference does not matter. The iron sights are zeroed at 50 yards but since I have a 10.5'' barrel the maximum effective range of the 5.56 round is less than 40 yards and it is after all a home defense weapon so I train at distances less than 20 yards. YMMV


Link Posted: 6/15/2009 1:33:19 PM EST
Originally Posted By L4zy:
Originally Posted By brothermike:

I shoot a DR.Optic red dot mounted on top of the A2 carry handle so the height difference does not matter. The iron sights are zeroed at 50 yards but since I have a 10.5'' barrel the maximum effective range of the 5.56 round is less than 40 yards and it is after all a home defense weapon so I train at distances less than 20 yards. YMMV




Glad I could amuse you, can you point out where I am wrong? I am going by the info I find here for starters.
Link Posted: 6/15/2009 7:03:00 PM EST
Originally Posted By brothermike:

Glad I could amuse you, can you point out where I am wrong? I am going by the info I find here for starters.


Those articles are mostly written about M193 or M855. Heavier bullets will still fragment at lower velocities. Stick with 70gr+ and you'll be fine. I just found it amusing that you made a blanket statement about 5.56 ammo.

Link

In particular 70+ grain rounds often maintain their fragmentation properties far beyond the fragmentation range of M855 and M193.


From: Link
Link Posted: 6/16/2009 5:25:10 AM EST
First thing you need to think about in a SBR is NOT using FMJ bullets. Get some nice soft points, hollow points, or balistic tips. Fragmenting is only important with FMJ military mandated rounds. Hunting rounds expand and cause damage without having to break apart.
Link Posted: 6/16/2009 1:18:45 PM EST
I gotcha, yes my statement was about military 5.56 ammo out of a 10.5'' barrel. I keep 40 rounds of 55gr. soft point in the magwell and another 40 rounds of AP in the redimag just to cover my bases, my 14.5 keeps a beta mag loaded for distances between 25-200 yards and anything beyond that I prefer my 6.5 grendel with 123 gr. Lapua BTHP or 120 gr. Nosler tip.
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